CZ 125: history, specs, pictures

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1975 CZ 125

The CZ 125 was a single cylinder, two-stroke allround motorcycle produced between 1974 and 2001. It could reach a top speed of 53 mph (85 km/h). Claimed horsepower was 9.79 HP (7.3 KW) @ 5500 RPM.

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, two-stroke. A 52.0mm bore x 58.0mm stroke result in a displacement of just 123.0 cubic centimeters. The engine featured a 8.6:1 compression ratio. Fuel was supplied via a port control.

Drive[edit | edit source]

The bike has a 5-speed transmission. The final drive was via chain. Power was moderated via the wet plate.

Chassis[edit | edit source]

It came with a 2.75-21 front tire and a 3.50-18 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The front suspension was a forks while the rear was equiped with a twin shocks. The 125 was fitted with a 3.3 Gallon (12.50 Liters) fuel tank. The bike weighed just 277.78 pounds (126.0 Kg). The wheelbase was 76.77 inches (1950 mm) long.

In Media[edit | edit source]

1975-CZ-125.jpg
CZ 125
Manufacturer
CZ
Also called 125 Sport, 125 Trail
Production 1974 - 2001
Class Road
Engine
single cylinder, two-stroke
Bore / Stroke 52.0mm x 58.0mm
Top Speed 53 mph (85 km/h)
Horsepower 9.79 HP (7.3 KW) @ 5500RPM
Fuel System carburetor. jikov 24mm
Transmission Gear box: 5-speed

Final Drive: chain

Clutch: wet plate
Suspension Front: forks
Rear: twin shocks
Brakes Front: single disc
Rear: expanding brake
Front Tire 2.75-21
Rear Tire 3.50-18
Wheelbase 76.77 inches (1950 mm)
Length 50.98 inches (1295 mm)
Width 25.59 inches (650 mm)
Height 39.57 inches (1005 mm)
Seat Height 33.46 inches (850 mm)
Weight 277.78 pounds (126.0 Kg) (dry), 127.0 kg (wet)
Fuel Capacity 3.3 Gallon (12.50 Liters)
Manuals Service Manual


The CZ 125 was a single cylinder, two-stroke Road motorcycle produced by CZ between 1974 and 2001. It could reach a top speed of 53 mph (85 km/h). Claimed horsepower was 9.79 HP (7.3 KW) @ 5500 RPM.

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, two-stroke. A 52.0mm bore x 58.0mm stroke result in a displacement of just 123.0 cubic centimeters. Fuel was supplied via a port control.

Drive[edit | edit source]

The bike has a 5-speed transmission. Power was moderated via the wet plate.

Chassis[edit | edit source]

It came with a 2.75-21 front tire and a 3.50-18 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The front suspension was a forks while the rear was equipped with a twin shocks. The 125 was fitted with a 3.3 Gallon (12.50 Liters) fuel tank. The bike weighed just 277.78 pounds (126.0 Kg). The wheelbase was 76.77 inches (1950 mm) long.

In Media[edit | edit source]